Spark-arrester.



PATBNTED JAN. 17, 1905.

J. J. SULLIVAN.

SPARK ARRESTER. APPLICATION FILED MAY 24. 1904.

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PATENHTED JAN. 17, 1905.

J. J. SULLIVAN. SPARK ARRESTER. APPLICATION FILED MAY'24. 1904.

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M J W UNITED STATEs Patented January 17, 1905.

PATENT OFFICE.

SPARK-ARRESTER.

SPECIFICATION forming part of Letters Patent No. 780,454, dated January 17, 1905. Application filed May 24, 1904. Serial No, 209,504.

To (.tZZ whom, it may concern:

Be it known that I, JOHN J. SULLIVAN, a citi-' zen of the United States, residing at Carbondale, in the county of Lackawanna and State of Pennsylvania, have invented new and useful Improvements in Spark-Arresters, of which the following is a specification.

This invention relates to spark-arresters adapted for use in connection with the-stacks of locomotive-engines; and the primary object of the same is to provide simple and effective devices within the locomotive smokebox to deflect the products of combustion, such as cinders and heated particles, and prevent escape thereof from the stack by causing them to be discharged or deposited into a receptacle or receiving means provided therefor in the locomotive structure.

The invention consists in the construction and arrangement of the several parts, which will be more fully hereinafter set forth.

In the drawings, Figure 1 is a transverse vertical section through the front end of a locomotive smoke-box and a portion of the stack therefor, showing the improved spark-arrester applied thereto. Fig. 2 is an elevation of the body of the spark-arrester. Figs 3 and 4 are plan views, respectively, of upper and lower reticulated closures for the body. Fig. 5 is a view similar to Fig. 1, showing a modification in the construction. Fig. 6 is an elevation of the lower extremity ofthe stack extension and reticulated attachment therefor.

Similar numerals of reference areemployed to indicate corresponding parts' in the several views.

Referring to Figs. 1, 2, 3, and 4:, the numeral 1 designates a locomotive smoke-box, and 2 the usual stack. The upper end of a stack extension-pipe 3 is fitted in and secured to the lower end of the stack 2, the pipe?) projecting far enough downwardly into the smoke-box l ahead of the usual fluesin the latter to cooperate with an exhaust-pipe 4, having an upwardly-projecting tip 5. The spark-arrester has an hourglass-shaped body 6, held in place by arms 7 secured to the upper portion thereof and to the extension 3adjacent the point of jointure of the latter to the lower end of the stack, the said arms having with inclined surfaces.

blocks 10 are used and present outer verti-- cally-straight surfaces against which the said lower ends of the arms are applied. The lower extremity of the extension 3 projects below.'

the waist or intermediately-constructed portion 11 of the body 6, and over the upper and lower open ends of said body reticulated screens or covers 12 and 13 are respectively secured, the extension 3 projecting through the center of the upper screen or cover 13 and the tip '5 of the exhaust-pipe 4 extending upwardly through the center of the lower screen or cover 12.

The modification shown by Figs. 5 and 6 embodies the same stack extension 3, stack 2,

exhaust-pipe 4, having a tip 5, and arms 7,

arranged in the boiler 1, as hereinbefore set forth. The body 6 of the arrester is also similar to that shown by Figs. 1 and 2; but the upper and lower ends of said body in this instance are fully open, and over the lower end of the extension 3 within the lower part of the body a downwardly-flaring screen or guard 14 is applied and has a closed reticulated bottom 15, through the center of which the tip 5 upwardly projects similar to the arrangement shown by Fig. 1, with the exception that the i said tip passes through the screen 12, attached to the bottom of the body.

The operation in both forms of the device shown is precisely the same, and both screens 12 and 13 and the screen 1 1 prevent the passage of cinders or products of combustion from the smoke-box into and upwardly through the extension 3 and stack 2 Without interfering in the least with the draft or obstructing the latter in its direct application to the stack by surrounding the extension 3 with a partial closure similar to the body 6 and providing the latter The cinders or products of combustion are drawn toward the arrester attachment and after obstruction in escape of the same through the extension and stack by the means set forth the cinders or products of combustion fall into a lower receptacle usually provided for this purpose. In the form of the device set forth the cinders and products of combustion will strike against the screens 12 and 13, the smoke being allowed to escape. In the form shown by Fig. 5 the smoke and products of combustion are drawn into the body 6, the smoke passing out through the extension 3 and stack 2, and the cinders and other coarse products falling from the body.

The improved spark-arrester may be easily applied in operative position, and to meet various applications changes in the proportions and dimensions may be resorted to without departing from the spiritof the invention.

Having thus fully described the invention, what is claimed as new is-- 1. The combination with a smoke-box having a stack, of a stack extension projecting downwardly into the smoke-box, a substantially hour glass-shaped spark-arrester arranged around the lower portion of the extension and suspended from the latter, a screen -means cooperating with the extension, and an exhaust-pipe extending upwardly through a part of the screen means, said exhaust-pipe and extension being separated from each other.

2. The combination with a smoke-box and stack of a locomotive, of an extension secured to the lower end of the stack and projecting downwardly into the smoke-box, a spark-arrester body of hour-glass-shaped form arranged around the lower extremity of the extension, a screen means cooperating with the said body and extension, and an exhaust-pipe having its upper terminal projecting through a portion of the said screen means, said exforate coverings over the upper and lower ends 4 of the body, the extension passing through the center of the upper covering, and an exhaustpipe having the upper extremity thereof passing through the center of the lower covering and located adjacent to the lower end of the extension.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN J. SULLIVAN.

Witnesses:

HENRY P. SMITH, JOHN F. AMES. 

